<template>
    <div>
         <!-- 面包屑导航 -->
         <el-breadcrumb separator-class="el-icon-arrow-right">
           <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
           <el-breadcrumb-item>商品管理</el-breadcrumb-item>
           <el-breadcrumb-item>商品列表</el-breadcrumb-item>
         </el-breadcrumb>
         <!-- 卡片视图 -->
         <el-card>
             <el-row :gutter="20">
                 <el-col :span="8">
                       <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="this.getGoodsList">
                       <el-button slot="append" icon="el-icon-search" @click="this.getGoodsList"></el-button>
                       </el-input>
                 </el-col>
                 <el-col :span="4">
                     <el-button type="primary" @click="goAddPage">添加商品</el-button>
                 </el-col>
             </el-row>
             
             <!-- 表格区域 -->
             <el-table :data="goodsList" border stripe>
                 <el-table-column type="index" label="#"></el-table-column>
                 <el-table-column label="商品名称" prop="goods_name"></el-table-column>
                 <el-table-column label="商品价格(元)" prop="goods_price" width="95px"></el-table-column>
                 <el-table-column label="商品重量" prop="goods_weight" width="70px"></el-table-column>
                 <el-table-column label="创建时间" prop="add_time" width="140px">
                     <template slot-scope="scope">
                         {{scope.row.add_time | dateFormat}}
                     </template>
                 </el-table-column>
                 <el-table-column label="操作" width="130px">
                     <template slot-scope="scope">
                           <el-button size="mini" type="primary" icon="el-icon-edit"></el-button>
                           <el-button size="mini" type="danger" icon="el-icon-delete" @click="removeById(scope.row.goods_id)"></el-button>
                     </template>
                 </el-table-column>
             </el-table>
             <!-- 分页功能 -->
             <el-pagination
                 @size-change="handleSizeChange"
                 @current-change="handleCurrentChange"
                 :current-page="queryInfo.pagenum"
                 :page-sizes="[10, 20, 30, 40]"
                 :page-size="queryInfo.pagesize"
                 layout="total, sizes, prev, pager, next, jumper"
                 :total="total" background>
             </el-pagination>
         </el-card>
    </div>
</template>

<script>
export default {
    data() {
        return {
            queryInfo:{
                query:'',
                pagenum:1,
                pagesize:10,
            },
            // 商品列表
            goodsList:[],
            // 总数据条数
            total:0,
        };
    },
    created() {
        this.getGoodsList()
    },
    mounted() {

    },
    methods: {
        // 根据分页获取对应的商品列表
        async getGoodsList() {
            const {data:res} = await this.$http.get('goods',{params:this.queryInfo})
            if(res.meta.status !== 200) {
                return this.$message.error('获取商品列表失败')
            }
            this.$message.success('获取商品列表成功')
            console.log(res.data);
            this.goodsList = res.data.goods
            this.total = res.data.total
        },
        // 监听分页的每页显示的条数
        handleSizeChange(newSize) {
            this.queryInfo.pagesize = newSize
            this.getGoodsList()
        },
        // 监听分页的页码
        handleCurrentChange(newPage) {
            this.queryInfo.pagenum = newPage
            this.getGoodsList()
        },
        // 删除操作
        async removeById(id) {
           const confirmResult = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
             confirmButtonText: '确定',
             cancelButtonText: '取消',
             type: 'warning'
           }).catch(err => err)

           if(confirmResult !== 'confirm') {
               return this.$message.info('已经取消删除')
           }
            // 确认了删除
            const {data:res} = await this.$http.delete(`goods/${id}`)

            if(res.meta.status !== 200) {
                return this.$message.error('删除失败！')
            }
            this.$message.success('删除成功！')
            // 重新渲染页面
            this.getGoodsList()
        },
        // 添加商品按钮
        goAddPage(){
            this.$router.push('/goods/add')
        }

    }
};
</script>

<style scoped lang="less">

</style>
